/* kernova.css — secondary page refinements for project docs */

/* Breadcrumb */
.breadcrumb { border-bottom: 1px solid var(--border); background: color-mix(in oklab, var(--bg) 94%, transparent); }
.breadcrumb .container { display: flex; gap: 8px; padding: 10px 0; color: var(--muted); }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }

/* Hero tweaks: more compact, no side media */
.hero { padding: 36px 0 16px; }
.hero-inner { grid-template-columns: 1fr; }
.hero-copy .lead { max-width: 70ch; }

/* Doc intro with TOC */
.doc-intro { display: grid; grid-template-columns: minmax(220px, 280px) 1fr; gap: 20px; align-items: start; }
.toc { position: sticky; top: 76px; border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; background: var(--bg-elev); box-shadow: var(--shadow); }
.toc strong { display: block; margin-bottom: 8px; }
.toc ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.toc a { color: var(--text); text-decoration: none; opacity: 0.9; }
.toc a:hover { color: var(--accent); opacity: 1; }

/* Cards: more document feel */
.cards { gap: 14px; }
.card h3 { font-size: 18px; }

/* Sections tighter for reading */
.section { padding: 48px 0; }
.section .section-lead { max-width: 78ch; }

/* Highlights as callouts */
.highlight { background: linear-gradient(180deg, color-mix(in oklab, var(--bg-elev) 92%, transparent), transparent); }

/* Responsive adjustments */
@media (max-width: 959px) {
  .doc-intro { grid-template-columns: 1fr; }
  .toc { position: static; }
}

/* Timeline for Data Flows */
.timeline { counter-reset: step; list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.timeline li { position: relative; background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 14px 14px 48px; box-shadow: var(--shadow); }
.timeline li::before { counter-increment: step; content: counter(step); position: absolute; left: 12px; top: 12px; width: 24px; height: 24px; display: grid; place-items: center; background: var(--accent); color: #020617; border-radius: 8px; font-weight: 700; font-size: 0.9rem; }
.timeline h4 { margin: 0 0 6px; font-size: 16px; }
.timeline p { margin: 0; color: var(--muted); }

/* Event type cards */
.event-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
@media (min-width: 720px) { .event-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.event-card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); display: grid; gap: 6px; transition: transform .2s ease; }
.event-card:hover { transform: translateY(-2px); }
.event-card .etype { font-weight: 700; font-size: 14px; letter-spacing: 0.2px; }
.event-card .examples { color: var(--muted); font-size: 0.95rem; }